求指教,请问NUC220如何使用SPI制作.TXT 或 .CSV 档案
我不熟悉使用新塘芯片和SD卡的操作希望各位可以指导一下我。请问NUC220VE3AN如何使用SPI制作.TXT 或 .CSV 档案在SD卡并把资料存在档案内? 如果可以请各位大家指导一下**作过程。看看数据手册把 首先,你要能实现无文件系统读写SD卡;之后,你要给SD卡初始化文件系统(也就是格式化);然后你就可以写文件进去了。 明白,谢谢指引 明白,谢谢指引 移植文件系统没成功吧 foxsbig 发表于 2022-7-16 11:09
移植文件系统没成功吧
还没成功,现在遇到"引用未定义函数"的问题,现时我不懂解决
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-writer.o): In function `_write_r':
writer.c:(.text._write_r+0x10): undefined reference to `_write'
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-closer.o): In function `_close_r':
closer.c:(.text._close_r+0xc): undefined reference to `_close'
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-fstatr.o): In function `_fstat_r':
fstatr.c:(.text._fstat_r+0xe): undefined reference to `_fstat'
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-isattyr.o): In function `_isatty_r':
isattyr.c:(.text._isatty_r+0xc): undefined reference to `_isatty'
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-lseekr.o): In function `_lseek_r':
lseekr.c:(.text._lseek_r+0x10): undefined reference to `_lseek'
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\libg.a(lib_a-readr.o): In function `_read_r':
readr.c:(.text._read_r+0x10): undefined reference to `_read
CooCox CoIDE Version: 1.7.5 本帖最后由 nbn13579 于 2022-8-4 12:00 编辑
foxsbig 发表于 2022-7-16 11:09
移植文件系统没成功吧
最主要我给这个卡了我很久, 我没用printf等的函数,但未找到位置把它屏蔽
c:/program files (x86)/gnu tools arm embedded/4.7 2014q2/bin/../lib/gcc/arm-none-eabi/4.7.4/../../../../arm-none-eabi/lib/armv6-m\librdimon.a(rdimon-syscalls.o): In function `_sbrk':
syscalls.c:(.text._sbrk+0x30): undefined reference to `end'
可以看看野火,或者原子的视频讲解 好像是坐标文件的样子,这是干什么用的
kiwis66 发表于 2022-8-6 13:57
可以看看野火,或者原子的视频讲解
好的, 我看看去了解一下 看看数据手册 楼主怎么样,解决了么,
搞不懂这两个文件格式是什么
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